20T-30-00071 Excavator parts pc40-7 Track Roller

The PC40-7 heavy wheel is a chassis component for small excavators, the main function is to support the weight of the machine and guide the track to roll correctly. It is usually made of wear-resistant steel, such as 50Mn or 40MnB, with surface hardness up to HRC48-54 and depth of 4mm-10mm to ensure good wear resistance and load carrying capacity.